Tie roots in a knot and then put it back in with the fish
There are half moon betta, delta betta, round tail betta, long tailed betta, crown tailed betta, king betta, and others I don't know of yet.
Betta fish can be from 2 to 4 inches long when fully grown.
A Betta does not have a "nitrogen cycle"
A betta fish is anywhere from 1 to 2 inches.
A female betta has very small fins with a long body while the male betta have lots of nice flowing fins.
you can tell if its a boy or girl by the fins the male Betta has long fins and the female Betta has small fins
a long time
Betta are airbreathers. So long as the ammonia and nitrates are okay, you don't need filters on a Betta tank.
Betta fish grow to be an average of 2 inches from head to the beginning of the tail.
A Long life for a Betta is around 30 months.
A normal length for a fully grown Betta male is around 2 inches excluding the tail fin.
Bettas are dumb as rocks. If you put another betta, any other anabantid like a gourami, or any long-finned fish in with a betta, the betta will fight it because he will think it's another betta. If you put a short-finned fish in with your betta, they'll live together peacefully.